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How to model chiller part-load in CFD with hot standby units?

AK202512115130

Hi everyone, I’m using Cadence Reality DC Advanced to simulate an air-cooled chiller plant. The building load is capped at 80%, and all chillers (including standby) are running to share that load.
Questions:

Represent part-load heat rejection at condenser coils?
Model fan speed control when the software uses chilled water supply temperature as the control basis?
Any best practices for distributing load across multiple chillers in this scenario?

Looking for tips or workflows—thanks!

Parents
  • FR20251216246

    Hi,

    Fan speed control can be implemented on the chiller by setting the Airflow > Flow Option to Controlled. This exposes an extra set of properties in a Controls section, and creates a Controller and Sensor as a child of the Chiller. The Sensor is automatically set to the Coolant Supply Temperature.

    For part-load scenarios, I would recommend submitting a case through the ASK portal, where we can provide specific advice based on the input data you have for the chiller. You can do this at support.cadence.com

Reply
  • FR20251216246

    Hi,

    Fan speed control can be implemented on the chiller by setting the Airflow > Flow Option to Controlled. This exposes an extra set of properties in a Controls section, and creates a Controller and Sensor as a child of the Chiller. The Sensor is automatically set to the Coolant Supply Temperature.

    For part-load scenarios, I would recommend submitting a case through the ASK portal, where we can provide specific advice based on the input data you have for the chiller. You can do this at support.cadence.com

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